Heater for printing-presses.



G. H. JENKINS.

HEATER FOR PRINTING PRESSES.

APPLICATION HLED mAY'lz. 1916.

Pmenzedl Mg. Y, MHZ

v.an

GEORGE E. JENKINS, OF CHICAGO, ILLINOIS.

' HEATER non PRINTING-PRESSES.

massive.

Specification of Letters Patent.

Patentes am. a, iai al Application filed May 12, 1916. Serial No. 97,149.

1o all whom it may concern:

Be it known that I, GEORGE H. JENKINS, :1i-citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful improvements in Heaters for Printing-Presses, of which the following is a specification.

The main objects of this invention are to provide a heater for drying the ink on printed sheets as the sheets pass through .the press, havingimproved means for controlling the operation of said heater; and to provide an improved connection of said means to the mechanism which controls the operation of the press, whereby said means are automatically operated in unisonl with said mechanism and danger of fire is practically eliminated and a considerable saving in fuel is effected.

An illustrated embodiment of this invention is shown in the accompanying drawings, in which- Figure l is a perspective view in dotted outline of a portion of the delivery end of a printing press, showing in full outline the heater and pilot light arranged thereon.

Fig. 2 is a side elevation in dotted outline of a printing press showing in full outline the arrangement of the gas supply pipes, the valve lby means of which the supply of gas is controlled and the controllingmechanism for the printing press connected to said valve.

Fig. 3 is an enlarged detail view taken on the line Ae- A of Fig. 1, showing how the heater passes in under the paper as it leaves j the delivery mechanism.

It is a well known. practice in the printingl business, to facilitate the drying of printed matter by arranging a heater adjacent to the path of thepaper at 4hSome point-.between its passing from the printing operation to the delivery table. This has been most commonly accomplished by providing a gas heater 1 vin the form of a tube 2`having a series of apertures`3 extending vthroughout the length thereof, arranged transverselyI` across the press and below but 'near the path lof the paper. K

1n the construction shown in the drawings, 'the heater 1 is shown applied to aV clips 5 against which the sheet of paper is delivered as it leaves the printing cylinder. Thus, the heater is moved along under the sheet of paper" (see Fig. 3) as the carriage 4 recedes therefrom, in allowing the sheet to settle on the delivery table 15. rlhe shield 6 partially surrounds the pipe 2 so-as to prevent direct contact of the flame with the paper.

A. flexible hose connection -7 connects the burner l with the gas supply pipe 10, a

valve 8 being arranged substantially as'indicated, for the purpose of controlling the supply of gas to the burner.

Heretofore, the use of such a burner in this position has encountered two very serious objections, namely, excessive gas consumption and the danger of fire. An excessive gas consumption is occasioned by reason of the full operation of the heater during intervals when the press is stopped for the purpose of attention to parts therea valve 9 located in the supply pipe 10 and.

arranged adjacent to 'the foot pedal 11 mounted on the operators platform 14 and which controls the operation of the press. A link 12 connects the valve 9 with the foot p edal 11 so that it is operated in synchronism therewith. Thus, when the press is stopped the gas is shut off from the burner and it matters not if the parts come to rest in the position shown in Fig. 3, there is no danger of fire. Also. the consumption of gas is discontinued as long as the press is A pilot light 13 is connected to the gas supply pipe v10 between the valve;9 and the source of supply, so that it is not affected by the operation. of the valve 9. This pilot light is located at one side of the press, adjacent to one end of the burner 1 and directly in the path thereof, so that gas issuing from the apertures 3 after the valve 9 has been opened, will be ignited by the flame of the pilot light 13, as the burner is moved past said light.

Although but one specific embodiment of this invention is herein shown and described, it will be understood that the construction may be altered or details omitted without departing from the spirit of this invention as defined by the following claims:

I claiml. The combination with a printing press having mechanism for controlling the operation thereof, of a gas heater arranged adjacent to the path of paper passing through said press, a valve for controlling the supply of gas to said heater, a connection between said valve and said mechanism whereby the shifting of said valve is controlled simultaneously with the Aoperation of said press,

and a pilot light .arranged adjacent to said heater and adapted to light said burner when said valve, after having been closed, is opened.

2. The combination with a printing press having mechanism for controlling the operation thereof, of a gas heater arranged adjacent and transverse to the path of paper passing through said press, a valve for convalve is controlled simultaneously with the l operation of said press, and a pilot light arranged adjacent to one end of said heater and adapted to light said burner when said valve, after having been closed, is opened.

3. The combination with a printing press having a reciprocating delivery means and mechanism for controlling the operation of the press, of a gas heater mounted on said delivery means, a valve for controlling the supply of gas to said heater, a connection between said valve and said operating mechanism whereby the shifting of said valve is controlled simultaneously with the operation of said press, and a stationary pilot light arranged 011 said press adjacent to one end of said burner and in the path thereof, whereby it is adapted to light said heater when said valve, after lnving been closed, is opened. Y

Signed at- Chicago this 10th day of May 1916.

GERGE H. JENKINS. 

